EP 0802247 A2 19971022 - Aqueous pigment ink composition
Title (en)
Aqueous pigment ink composition
Title (de)
Wässrige Pigmentzusammensetzung für Tinte
Title (fr)
Composition pigmentaire aqueuse pour encre
Publication
Application
Priority
- JP 9843696 A 19960419
- JP 16194696 A 19960621
Abstract (en)
Disclosed is an aqueous pigment ink composition comprising water and oxidized carbon black dispersed stably in the water, wherein said oxidized carbon black is obtained by oxidizing carbon black using hypohalous acid and/or salt thereof and wherein at least a part of an acidic group existing on the surface of said oxidized carbon black associates with an amine compound to form an ammonium salt. The aqueous pigment ink composition realizes smooth printing with ink jet nozzle, and smooth writing with fine pen tip and it has sufficient density. Further, the recorded traces obtained by using the ink composition is excellent in water resistance.
IPC 1-7
IPC 8 full level
C09C 1/56 (2006.01); C09D 11/00 (2006.01); C09D 11/16 (2006.01)
CPC (source: EP US)
C09C 1/565 (2013.01 - EP US); C09D 11/17 (2013.01 - EP US); C09D 11/324 (2013.01 - EP US); C01P 2004/64 (2013.01 - EP US); C01P 2006/22 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
EP 0802247 A2 19971022; EP 0802247 A3 19990519; EP 0802247 B1 20030709; DE 69723342 D1 20030814; DE 69723342 T2 20040415; US 5846307 A 19981208
DOCDB simple family (application)
EP 97106557 A 19970421; DE 69723342 T 19970421; US 84278597 A 19970416